Use these sites for your research:

http://www.nbcolympics.com/

http://www.topendsports.com/events/winter/sports/

http://sportsillustrated.cnn.com/olympics/2010/

http://espn.go.com/olympics/winter/2010/athletes

http://www.olympic.org/en/content/Sports/

http://www.vancouver2010.com/olympic-athletes/

http://www.nytimes.com/pages/sports/olympics/index.html